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A316875 Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero. 1

%I #4 Jul 15 2018 14:04:33

%S 64,1709,36900,871345,19933839,486546897,11836970493,286716424150,

%T 6977675255288,170015938697302,4138167646465313,100724821265896610,

%U 2452502487475584970,59712288213161682740,1453740520399913939989

%N Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

%C Column 7 of A316876.

%H R. H. Hardin, <a href="/A316875/b316875.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

%e ..0..0..0..0..1..1..0. .0..0..1..0..0..1..1. .0..0..0..0..0..0..0

%e ..0..0..0..0..1..0..1. .0..0..0..0..1..1..1. .0..0..0..0..1..1..0

%e ..0..0..0..0..1..0..1. .0..0..0..0..1..0..1. .0..0..0..0..0..1..1

%e ..0..0..0..0..1..1..1. .0..0..0..0..1..0..1. .0..0..0..0..0..0..0

%e ..0..0..0..0..1..0..1. .0..0..0..0..1..1..1. .0..0..0..0..0..0..0

%Y Cf. A316876.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 15 2018

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Last modified March 29 08:13 EDT 2024. Contains 371265 sequences. (Running on oeis4.)